Dimorphism in (2 Z)-2-benzyl­idene- N,7-dimethyl-3-oxo-5-phenyl-2,3-dihydro-5 H-1,3-thia­zolo[3,2- a]pyrimidine-6-carboxamide.

Autor: Sridhar, B., Ravikumar, K., Sadanandam, Y. S.
Předmět:
Zdroj: Acta Crystallographica: Section C (Wiley-Blackwell); Dec2006, Vol. 62 Issue 12, po687-o690, 4p, 5 Diagrams, 4 Charts
Abstrakt: The title compound, C22H19N3O2S, crystallizes in two polymorphic forms having the same space group, viz. P , with Z′ = 2 and Z′ = 1. In both polymorphs, the planar thia­zole ring is fused cis with the dihydro­pyrimidine ring, the carbamoyl group is in an extended conformation with an anti­clinal orientation with respect to the pyrimidine ring, and the phenyl ring is attached to the pyrimidine ring approximately at a right angle. The two polymorphs have different inter­planar angles between the phenyl and thia­zole rings. The mol­ecules are linked by N—H⋯O and C—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index